graphics/piglit: fix build

Include libgen.h for the prototype of basename() and correct the
type of a return value (0 instead of (void*)0, which probably has
been accepted with a warning by a previous compiler version, but
is considered an error by clang-15 in -CURRENT).

Reported by:	pkg-fallout

graphics/piglit/files/patch-tests_egl_spec_egl__chromium__sync__control_egl__chromium__sync__control.c

@@ -0,0 +1,12 @@
+--- tests/egl/spec/egl_chromium_sync_control/egl_chromium_sync_control.c.orig	2020-09-09 08:57:32 UTC
++++ tests/egl/spec/egl_chromium_sync_control/egl_chromium_sync_control.c
+@@ -35,6 +35,9 @@
+ #include <stdio.h>
+ #include <unistd.h>
+ #include <time.h>
++#ifdef __FreeBSD__
++#include <libgen.h>	/* For basename(3) */
++#endif
+ 
+ #include "piglit-util-egl.h"
+ #include "piglit-util-gl.h"

graphics/piglit/files/patch-tests_spec_ext__external__objects_vk.c

@@ -0,0 +1,11 @@
+--- tests/spec/ext_external_objects/vk.c.orig	2020-09-09 08:57:32 UTC
++++ tests/spec/ext_external_objects/vk.c
+@@ -336,7 +336,7 @@ get_aspect_from_depth_format(VkFormat depth_format)
+ 	default:
+ 		break;
+ 	}
+-	return VK_NULL_HANDLE;
++	return VK_IMAGE_ASPECT_NONE;
+ }
+ 
+ static VkPipelineStageFlags

graphics/piglit/files/patch-tests_util_piglit-framework-gl.c

@@ -0,0 +1,12 @@
+--- tests/util/piglit-framework-gl.c.orig	2020-09-09 08:57:32 UTC
++++ tests/util/piglit-framework-gl.c
+@@ -27,6 +27,9 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <math.h>
++#ifdef __FreeBSD__
++#include <libgen.h>	/* For basename(3) */
++#endif
+ 
+ #include "piglit-util-gl.h"
+ #include "piglit-framework-gl/piglit_gl_framework.h"